Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/12—Face or body powders for grooming, adorning or absorbing
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/0216—Solid or semisolid forms
  • A61K8/022—Powders; Compacted Powders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/67—Vitamins
  • A61K8/676—Ascorbic acid, i.e. vitamin C
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/73—Polysaccharides
  • A61K8/732—Starch; Amylose; Amylopectin; Derivatives thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/14—Preparations for removing make-up
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/10—Washing or bathing preparations

Definitions

• the invention relates to a cosmetic or dermatological powder, to its manufacturing process and its uses, in particular for care, cleaning, make-up removal, makeup and / or treatment of the skin, mucous membranes and / or scalp.
• the powder obtained according to this document is hygroscopic, which is a disadvantage when it is desired to use the powder as it is, since it has tends to get wet and therefore exhibits poor conservation in humid tropical countries.
• the powder obtained is hygroscopic and therefore sensitive to presence of water, with the same drawbacks as indicated above.
• the starch used is the native starch which presents, in addition to the disadvantage of giving hygroscopic compositions, that to have poor bacteriological protection.
• starch modified allowed to obtain an anhydrous cosmetic or dermatological powder may contain at least one fatty substance, not having the disadvantages including hygroscopy of powders of the prior art and the preparation of which does not not require complete solubilization of the starch and therefore the use of high temperatures and pressures when mixing starch, oil and phase aqueous.
• the present invention therefore relates to a cosmetic powder or dermatological, characterized in that it comprises from 5 to 70% by weight of at least minus a modified starch and 30 to 95% by weight of an oily phase comprising at least one oil, relative to the total weight of the composition.
• Powder means a solid substance divided into very fine particles or grains fine and homogeneous.
• the powder according to the invention is preferably free of protein.
• the powder comprises from 5 to 50% modified starch and 50 to 95% of an oily phase.
• the powder according to the invention comprises an oily phase fixed in the starch amended.
• This powder has in particular the advantages of being applicable on all types skin without leaving an oily effect despite the large amount of oil, to be easy and quick to use, penetrate the skin without leaving a visible film, retain the moisturizing properties of fatty substances and not require adding a liquid such as water since it can be used as it is. In addition, you can easily take the desired amount.
• this powder can be obtained without emulsifier and that it can be stored well, the addition of emulsifiers and / or preservatives can be avoided, and thus obtaining a much less irritating powder than skincare products classics.
• the powder according to the invention has a particle size (or average size in number of particles) which can range in particular from approximately 0.1 to 100 ⁇ m, from preferably from 0.5 to 50 ⁇ m and better still from 1 to 10 ⁇ m.
• the grain size is measured with the device: "MICROTRAC X100 & SRA 150" from the company LEEDS-NORTHRUP.
• modified starch used in the composition of the invention can be modified by one or more of the following reactions: pregelatinization, oxidation, crosslinking, esterification.
• modified starches which can be used according to the invention, mention may, for example, be made starches esterified with octenylsuccinic anhydride and more particularly "Aluminum Starch octenyl succinate" such as the product sold by the company NATIONAL STARCH under the name of DRY-FLO, the cross-linked corn starch sold under the name RESISTAMYL E2 by the company AMYLUM; apple starch earth esterified by a carboxymethyl group sold under the name SUPRAMYL P 60 by the company AMYLUM, corn starch esterified by a hydroxypropyl group sold under the name MERIGEL EF6 by the company AMYLUM; starch pregelatimized, modified by octenylsuccinic anhydride, then by a motif hydrophobic, sold under the name of NATROSORB HFB by the company NATIONAL STARCH; crosslinked and acetylated corn starch sold by the company CERESTAR under the name C *
• the starches used are DRY-FLO and C * Flo 06205.
• the oily phase contains at least one oil.
• the oil used can be chosen among mineral oils such as paraffin oils or petrolatum, the silicone oils such as volatile silicone oils, original oils vegetable (e.g. sweet almond oil, apricot almond oil), oils of animal origin, synthetic oils and their mixtures.
• oils such as acids fatty, fatty alcohols, waxes such as animal waxes such as beeswax, carnauba or candellila waxes, mineral waxes microcrystalline waxes and synthetic waxes such as polyethylene or silicone.
• the powder of the invention can also comprise one or more additives commonly used in the cosmetic and dermatological fields.
• additives for example cosmetic or dermatological active agents, emulsifiers or surfactants, detergents, coloring matters including pigments, abrasives, antioxidants or anti-free radicals, fillers, fragrances.
• additives can represent from 0 to 30% of the total weight powder, preferably from 0.5 to 15% of the total weight of the powder.
• active agents there may be mentioned, for example, anti-acne, antimicrobial agents, antiperspirants, astringents, deodorants, depilatories, external analgesics, agents for conditioning the hair, conditioning the skin, sun protection, vitamins, essential fatty acids, agents keratolytics, enzymes, moisturizers, anti-inflammatories, detergents or foaming agents, perfumes, mineral matifying fillers or organic, depigmentants.
• active agents there may be mentioned, for example, anti-acne, antimicrobial agents, antiperspirants, astringents, deodorants, depilatories, external analgesics, agents for conditioning the hair, conditioning the skin, sun protection, vitamins, essential fatty acids, agents keratolytics, enzymes, moisturizers, anti-inflammatories, detergents or foaming agents, perfumes, mineral matifying fillers or organic, depigmentants.
• the powder of the invention comprises a medium physiologically acceptable for the skin, scalp and / or mucous membranes.
• Another object of the invention relates to a method for manufacturing a powder, especially cosmetic or dermatological, comprising at least one starch modified and an oily phase, said process comprising (1) the preparation of a oil-in-water dispersion by mixing an oily phase comprising at least at least one oil in an aqueous phase comprising at least one starch modified, the oily phase / starch weight ratio ranging from 3: 7 to 19: 1, and (2) the dehydrating said dispersion to obtain said powder.
• dispersion any oil-in-water dispersion or emulsion, that is to say any mixture of an oily phase in an aqueous phase in presence or absence of an emulsifier.
• the aqueous phase of the oil-in-water dispersion preferably represents minus 30% by weight of the dispersion.
• the oily phase / starch weight ratio ranges from 3: 7 to 19: 1 and is preferably equal to or greater than 1. This ratio is preferably from 1 to 19 and better still from 2 to 10.
• the dispersion used is such that it has a dry matter content of between 5 and 70% by weight and preferably between 10 and 60% by weight.
• a dry matter content allows a viscosity of the dispersion, such that it is sufficiently fluid so that it can be used for the following steps.
• the aqueous phase can be prepared at any temperature (0 to 100 ° C). We preferably works at a temperature ranging from 80 ° to 100 ° C.
• the oily phase is prepared and added to the phase aqueous which is preferably cooled to a temperature below 80 °, of preferably in an amount such that there is, in the resulting dispersion, a dry matter content between 5 and 70% by weight.
• the dispersion is then formed by slowly mixing the aqueous phases and oily, for example by gently incorporating the oily phase into the aqueous while maintaining constant agitation.
• An oil-in-water dispersion is thus obtained, having a pH dependent on its composition, but generally between 4 and 9.
• the method comprises a homogenization step between the preparation of the dispersion by mixing the oily phase and the aqueous phase and before the dehydration of the dispersion obtained.
• the homogenization is advantageously carried out under high pressure, so as to reduce the average size of the droplets of the oily phase up to approximately 350 nm, or even less.
• the homogenization is carried out under a pressure generally between 300 and 600 bars, preferably around 600 bars (60 x 10 6 Pa), in order to obtain oily phase droplets having an average size (in number), preferably smaller. at 350 nm, generally ranging from 80 to 300 nm.
• the dispersion thus homogenized is then dehydrated by any known process, and in particular by atomization or by lyophilization.
• dehydration is carried out by atomization.
• the temperature of the hot air used for drying is preferably from about 100 ° C to 220 ° C, and the powder outlet temperature ranges from preferably around 30 ° C to 140 ° C.
• the atomization time is very short; he's from preferably less than or equal to 2 minutes.
• the present invention also relates to a powder, in particular a cosmetic and / or dermatological likely to be obtained according to the method described above.
• the powder obtained can be compacted to gain volume and to facilitate packaging, preservation, storage and use. Before optional compaction of the powder, it can undergo a granulation step additional purpose of homogenizing the particle size of the powder.
• the powder obtained is very stable and can be stored for several months without being can observe phase separation, color evolution, recovery water or other degradations, microbiological for example.
• active ingredients sensitive to water or oxidation such as vitamins like ascorbic acid (vitamin C), green tea or enzymes, remain very stable in this type of powder.
• the powder of the invention can be used directly as is or incorporated in a cosmetic and / or dermatological composition presented under a other dosage form such as lotion, W / O or O / W emulsion.
• the present invention therefore also relates to a cosmetic composition and / or dermatological comprising a powder as defined above.
• the subsequent use of the powder of the invention depends on the aim sought and on the assets possibly present. It can be used in particular for the care, cleansing, removing make-up, makeup and / or treatment of human skin, scalp and / or mucous membranes.
• the present invention also relates to a cosmetic care process, cleansing, makeup removal, makeup and / or treatment of the skin, mucous membranes and / or scalp, including application to the skin, mucous membranes and / or the scalp, of a powder as defined above.
• Another object of the invention is the use of the powder as defined above for the preparation of a composition intended for the care, cleaning, make-up removal, make-up and / or treatment of the skin, scalp and / or mucous membranes.
• a mixture containing 8% of modified starch and 68% of water is prepared and the mixture is heated to 95 ° C., then it is cooled to 70 ° C. before incorporating 24% of d oil. apricot, while maintaining constant agitation so as to obtain an oil-in-water dispersion.
• the dispersion is cooled to ambient temperature while stirring and it is homogenized under a pressure of approximately 600 bars (60 x 10 6 Pa), then it is passed through an atomization apparatus where the hot air is at 200 ° C and the outlet temperature is 120 ° C.
• the powder is used as is, not reconstituted, and constitutes a product effective in nourishing the skin.
• a powder is obtained which can be applied to the skin to improve the radiance of the complexion and smooth the lines.
• Vitamin C remains stable in this formula: after 2 months at 45 ° C, we observe less than 5% degradation.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Dermatology (AREA)
• Chemical & Material Sciences (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Medicinal Chemistry (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Organic Chemistry (AREA)
• Pharmacology & Pharmacy (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Cosmetics (AREA)
• Medicinal Preparation (AREA)

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Cited By (2)

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Citations (6)

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• 1998
  • 1998-02-03 FR FR9801219A patent/FR2774284B1/fr not_active Expired - Fee Related
• 1999
  • 1999-01-12 TW TW088100373A patent/TW522020B/zh not_active IP Right Cessation
  • 1999-01-15 DE DE69900950T patent/DE69900950T3/de not_active Expired - Lifetime
  • 1999-01-15 ES ES99400098T patent/ES2174575T5/es not_active Expired - Lifetime
  • 1999-01-15 EP EP99400098A patent/EP0938892B2/de not_active Expired - Lifetime
  • 1999-01-21 BR BR9900288-4A patent/BR9900288A/pt not_active IP Right Cessation
  • 1999-01-29 KR KR1019990002865A patent/KR100312053B1/ko not_active IP Right Cessation
  • 1999-02-02 CA CA002258977A patent/CA2258977A1/fr not_active Abandoned
  • 1999-02-02 CN CNB991017447A patent/CN1142762C/zh not_active Expired - Fee Related
  • 1999-02-02 JP JP02547299A patent/JP3276937B2/ja not_active Expired - Fee Related
  • 1999-02-03 US US09/243,495 patent/US6416751B1/en not_active Expired - Fee Related

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